ADAS Sensor Calibration with Actuated Target Alignment
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Solution Overview
Problem
Existing vehicle sensors, such as those used in ADAS systems, require periodic realignment or recalibration due to wear and tear or misalignment caused by driving conditions or collisions, affecting their accuracy and functionality.
Innovation Solution
A system and method for calibrating vehicle sensors by aligning a target with the sensor using a target adjustment stand equipped with actuators and sensors to determine the vehicle's orientation, allowing precise positioning and calibration of the sensor relative to the vehicle's vertical center plane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors are aligned and calibrated by the manufacturer during production, then initial sensor accuracy is achieved, but sensor misalignment occurs over time due to wear and tear or driving conditions
Solution Approach 1:
The system performs preliminary alignment by determining the vehicle's vertical center plane and using this information to pre-position the calibration target in the correct location, eliminating the need for time-consuming trial-and-error adjustment during actual calibration
2Measurement precision
If a target adjustment stand with multiple actuators is used to precisely position the calibration target, then alignment precision is improved, but device complexity increases
Solution Approach 1:
The system uses sensors to detect the vehicle's orientation and position, feeds this information back to the controller, which then actuates the appropriate actuators to position the target accurately, creating a closed-loop control system that simplifies operation despite multiple adjustment mechanisms
Solution Approach 2:
The system automatically determines vehicle orientation, calculates target position, and actuates the adjustment mechanisms without requiring manual intervention, making the complex device easy to operate
Data Source
AI summary
A system and method of calibrating an ADAS sensor of a vehicle by aligning a target with the sensor using a target adjustment stand that includes a base frame and a movable target mount configured to support a target, with the target adjustment stand including one or more actuators for adjusting the position of the target mount. The position of the target mount is adjusted based on the orientation of the vehicle relative to the target adjustment stand. Upon properly orienting the target mount, and the target supported thereon, a calibration routine is performed whereby the sensor is calibrated using the target.